When first using your Bluetooth USB device did you use the standard Microsoft Bluetooth driver/stack, or have you installed some third-party Bluettoth driver/stack software?

Papywizard works best with the standard Microsoft Bluetooth driver/stack and doesn't work with many third-party Bluetooth drivers/stacks.

If you used third-party Bluetoth software then uninstall it and then install the Bluetooth USB device again using the standard Microsoft bluetooth driver/stack.

Then using the standard Windows system utilities pair the Pc's Bluetooth USB device with the PapyMerlin Bluetooth drive and the configure a serial driver connection using the COM port set up by the Micirosoft Bluetooth software. Be aware that Papywizard enumerates COM ports from zero. So when entering a value for the COM port you may enter '0' or 'COM1, '1' or 'COM2' and so on.